Envelop-making machine.



E. G. STAUDE.

ENVELOP MAKING MACHINE.

APPLICATION man Jun/24,1308.

1,144,506. Patented June 29, 1915.

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ENVELOP MAKING MACHINE.

APPLICAUON FILED 1uLY24. 1908.

Patented June 29, 1915.

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H15 ATTORN EY E. G. STAUDE.

ENVELOP MAKING MACHINE.

APPLICATION FILED luLY 24. 1908.

l 144,506., Patented June 29, 1915.

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E. G. STAUDE.

ENVELOP MAKING MACHINE'.

APPUCATIN FlLED JULY24, 1908. 1,144,506., Patented June 29, 1915.

5 SHEETS-SHEET 4.

M Y BY F'IG Hl ATTORNEYQS E. G. STAUDE.

ENVELOP MAKING MACHINE. APPLICATION FILED IuLY 24. 1908.

1 144,506. PaIenIed June 29, 1915.

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EDWIN G. STAUDEjOF MINNEAPOLISpMINNESOTA, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO UNITED STATES ENVELOPE COMPANY, OF WORCESTER, MASSCHU- l sn'rtr's, a CORPORATION ENvELor-MAKING MACHINE.

mageos.

Application led July 24, 1908. Serial No. 445,166.

lThe invention consists generally in means for.- centering or squaring the blanks as they approach the creasing devices, so that the creasing or scoring may be evenly and accurately performed,

The invention consists furtherl in means for `centering the blanks after the side flaps have been folded and pasted preparatory to creasing and folding the end flaps.

The -invention consists further in various constructions and combinations hereinafter described and particularly pointed out in the claims. Y

In the accompanying drawings forming part of this specification, Figure 1 is a plan;

View of an envelop folding machine embodying my invention,.Fig. 2 is a longitudinal section through the feed mechanism and the portion of the machine wherein the side flaps are creased, pasted and folded. Fig. 3 is a ,similar view of the delivery portion of the machine wherein the end flaps are creased and folded and one of said flaps is preferably pasted. Fig.' 4 is a sectional detail view of the receiving portion of the machine illustrating the feeding device and means forl centering or squaring the blanks and delivering them to the creasing rolls. Fig. 5 isa sectional detail view illustrating the means for centering or squaring the blanks before they pass between the creasing rolls. Fig. 6 is a top view illustrating-.theposition assumed by the blanks during the centering or squaring operation. Fig. detail view illustrating the means for driving the belts. 8 is a detail view illustra-ting the operation of the creasing rolls at is a sectional Patented June 29, 1915.

the receiving end of the machine. Fig. 9 is a similar view illustrating the operation of a similar pair of rolls that crease the end yflaps 1n the other portion of the machine. F 1g. 10 is a detail view illustrating the mechanism for moving the blank laterally toward the creasing and folding devices for the end flaps. F i` 1 1 is a plan view illustratlng a modified arrangement of the blank centering means. Fig. 12 is a sectional View of the structure shown in Fig. 11.

In the drawings, 2 represents the frame of l.the machine whereon the operating `mechanism is mounted. This frame may be of any preferred construction. At the receiving endof the frame 2 blank feeding means are provided, preferably having an lnclined feed plate 3 upon which the blanks to be creased, pasted and folded, are arranged.

The device that I have illustrated in the4 drawings and which I prefer to use in this machine for taking the blanks successively from the pile on the feed plate and delivering them one at a time to the belts by which -they are fed or carried to the creasing rolls, is shown and described in Letters Patent of the` United States, No. 1,033,040, issued to me July 16, 1912. I make n o claim to the construction of this device hereinand a detailed description of it is, therefore, unnecessary in this specification, nor do I limit myself to the use of this or any particular blank feeding device.

The roll or wheel 4 by which the blanks are delivered one at a time to the feed belts, is preferably provided with plugs 5 of rubber or other yielding material arranged in sockets in its periphery. This feed roll or wheel 4-engages the top blank of a series resting uponia block 6, preferably of rubber or other yielding material, mounted on a plate 7 that is preferably pivoted to the machine frame and capable of adjustment by means of ay lscrew 8, whereby the proper angle is obtained to insure the uniformv feeding of the blanks. A shaft 9'is' arranged below the roll or wheel 4, and this shaft preferably carries a series of pulleys 10 upon which are arranged the feed belts ,11, also preferably extending over pulleys12 on a shaft 13. Y v

I provide means whereby as each blank is chain belts being properly timed, engage the moved forward by the belts 11, it is engaged by a centering device traveling at a different rate of speed than said belts and iscentered or squared up so as to pass in proper alinement to the succeeding rolls. As here shown this centering device is -constructed as followsz. A shaft 14 is preferably arranged in front of the shaft 9 and this shaft is provided with sprockets 15- which are connected by suitable sprocket chains or chain belts 16 with sprockets 17 secured on the shaft 13. garrow faced rolls 18 are preferably loosel ounted on the collars of the sprockets 1 and said rolls contact with similar rolls 19 preferably secured on a shaft -20 arranged above the shaft 13. The chain. belts 16 are preferably two in number and they are each preferably provided with projecting'pins 21 correspondingly arranged on the chains and extending into the path 'of an envelop blank carried by the belts 11. The pulleys 12 are preferably loose on the shaft-13 and the belts 11, of which there are usually three, operate -at a greater speed than the chain belts 16,

and, consequently, as a blank is fed forward by the belts 11 it will, the movement of the pins 21 and be held in contact therewith until the forward portion of the blank is in position to be engaged by the narrow faced Y rolls 18` and 19, which feed the blank between the creasing rolls. YThe feed rolls 18 and 19 preferably catch the blank before the pins 21 relieve it and these rolls bring the blank to the creasing rolls without losing register, or without its position being disturbed.

The engagement of the pins 21 with the forward portion of the blank, as described,

will insure the centering or squaring of the blanks during the feeding operation and will prevent any possibility'of their passing to the creasing rolls unevenly, which, if it did occur, would result in an irregular creasing of the blank and a misfshaped envelop when the blank was folded. A guard 23 is preferably arranged above the blank on belts "11 and an arm 24, preferably carrying a ball, is

arranged to bear on the blank` and hold it' down upon the belts.

In front of the shafts `13 and 20 I prefer- A' ably provide shafts 25 and 26 on` which creasing rolls 27 and 28-are mounted. These rolls are adaptedto crease o score the blank preparatory to its side lias being folded. The creasing rollsras well as the pulleys and sprocket wheels for the. feed belts and chains are laterally adjustable on theirv shafts to adapt the machine forblanks of diHerent 'blanks pass v,to belts v29,'and 30 preferably carried by pulleys31 and' 32 onthel shafts 33 and 34. The belt 30 .runs upon' a suitably j0urna1ed" pulley 32.: Near the pulley y31 widths. After leaving the creasing rolls the provide a pasting device 35 arranged to apply paste to the edges of theflaps of the passing blanks. The shaft 33 l'preferably extends beyond the machine on one side and has a driving pulley 36 that also has a driv ing connection with the shaft 34. The shafts 13 and 25 aredriven by means` of va belt 37 and thegear' 38. Stationary folders 39 are preferably provided to engage the edges of the blanks and fold them over upon the middle portion, the folding operation being completed by means of frames 40 supported above the feed belts and carrying anti-friction rolls 41. Shafts 42 and 43 are preferably mounted one over the other at the delivery end of the first frame, and on these shafts are pulleys 44 and 45 around which belts 29 and 30 pass. These belts, with the folding mechanism, vare adjustable laterally on their supports to adapt the Jmachine for folding blanks of different widths. the shafts 42 and43 I prefer to arrange rolls 46 through which the blanks are delivered on to a table 47 This table has preferably a roll 48 mounted in suitable bearings with the top of the roll about on a level with the top of the table. The table is also provided at one side with an adjustable stop 49 which Near If the envelop rebounds uponstriking this stop the roll 48 immediately returns it to its proper position so that when the feed belts 53 deliver the envelop to the mechanism carried by the frame 50`it will be in proper alinement for a continuance of the'folding and pasting operation.

The frame 50 preferably forms a horizonably extends in a direction at right angles substantially to the frame 2 of that part of the machine in which the initial folding operation is performed. When the blanks are delivered to this table, the side flaps are `tal continuation of the table 47. It preferf creased and folded, and their gummed` sur" faces squeezed together and te that extent the envelop or other article is completed. The inalstep in this operation is the creasing and folding of the end flaps of the blank and this isl accomplished in this machine by the following means: The shafts 51 and52 are mounted on said table 47 and are connected by belts 53 having pins 54 which areadapted to engage the edges of the artially formed envelops deposited` upon t e 'table and move them laterally thereon toward the l creasing rolls 54. and 55, a suitable guide 56 being provided in advance of vsaid rolls.

Feed belts 57 and 58 are provided for pulleys y59 and 60 mounted on shafts`61 and 62. The'belt 57 passes. around a pulley 63 on a shaft 65 and a shorter belt 64 passes around a pulley 64 on a shaft 66. A paste device 67 is arranged above the feed belts and is adapted to apply paste to the end flaps. If preferred only one of said paste'devices may be used. lA frame 68 having anti-friction wheels 69 is provided to hold the blanks in place during this feedingand folding operation. Stationary folders 70 are arranged to turn the ends of the flaps inwardly and complete the folding operation. 'Ihese devices are preferably adjustable laterally with respect to the other portions of the machine to adapt them for blanks of different lengths; After leaving the feed belts the blanks preferably pass to rolls 71, and from these to a stacker belt 72 which operates in connection with vertical spirals 73 for the purpose of lifting the blanks and stacking them in a hopper 74. The stacker device 'that I prefer to use is shown and described in the pat- Aent is'sued to me February 20, 1912,`No.

The mechanism of the secondary portion of the machine is driven through shafts 75 and 76 geared to each other and to the driving shaft.` y

In Figs. 11 and 12 I have shown a modiication of the centering mechanism which consists in pins arranged on the centering belts to engage the rear edges of the blanks instead ofv contactingwith the forward edge of said blanks. The feed belts 11 in this case operate at a slower speed than the belts carrying the pins. lThe mechanism is substantially the same as that shown in Fig-.U4 of the drawings, except that its mode of operation is reversed. I, therefore, use the same reference numerals in referring to the different parts of the modified structure with the addition vof the exponent a Operation: The blanks to be folded arev centered or squared up, and are properly and `evenly presented to the feed rolls 18 and 19, which deliver the blanks to the creasing rolls 27 and-28. They are moved forward by the creasing rolls and are engaged and carried along bylthe belts 29 and 30. While being clarriedpby these belts paste is applied tofthe. edge of one flap of each blank and thel flaps are then folded and passed be-v tween'therolls 46 by whichjthe iiaps are pressed together,` 4and the blanks thus v creased, pasted and folded arei'deliveredby the rolls 46 to the table 47. The roll 48 engages the under side of each partially folded blank as it reaches this table and moves its forward end against the stop 49. The roll 48 tends to hold the partially folded blank with its forward end against said stop. This action centers the blank for the other set of creasing rolls. While the end of the blank is thus held against the stop 49 it will be noted that it is not prevented from being moved freely laterally into engagement with the second set of creasing, pasting and folding devices, and, in fact, while the roll 4S is in engagement with the blank and is holding its end against the stop 49, said blank will be moved laterally by the chain oelts 53 having lugs 54, to the second creasing mechanism by 'which the end flaps are creased, after which at least one of said flaps will be folded and pasted. The result of this'second centering or squaring up of the partly folded article, after it leaves the mechanism by which its side flaps are creased, pasted and folded, is to present this partly folded article to the mechanism by which the end flaps are creased, in proper position and alinement for such creasing.

The operation is substantially the same when the chain belts are caused to move faster than the other belts and the pins engage the rear of the blank as illustrated in the modified form of the invention. In each instance each individual blank is centered or squared up while it is traveling and before it is engaged by the creasing means, and thereby the creases or scores are properly positioned on the blanks and irregular creasing or mis-shapingof the envelops or other articles, is avoided.

While I have shown and described a mechanism adapted particularly for making envelops I do not confine myself to such use 0f the machine, as the apparatus may be employed for handlingother blanks which are to be creased and folded to form side and end aps.

I claim as my invention:

1. In a machine ofthe class described, means for forwarding a blank and for squaring it during its forward movement, comprising the' following instrumentalities a frictionally engaging forwarding means for said blank, positively engaging means, to which the blank is delivered by said frictionally engaging means, for continuing the forward movement of said blank in the plane of its fiat or extended position, means forengaging an edge of said blank during its movement by said frictionally engaging means, to square the same, and means for moving said engaging means out of the path of the blank 'as the same isdelivered to said positively engaging forwarding means.

2. In a machine ofthe class described, a'

and a positively engaging eeding means to -which the blank is delivered by said frictionally engaging member, means'for engaging an edge of said blank during its movement by said frictionally engaging member, and means for moving said engaging means at a speed different from the speed of said frictionally engaging member, said engaging means being movable out of engagement with said edge of the blank before said blank is seized byv said positively engaging forwarding` means.

3. In amachine of the class described, a series of moving tapes for forwarding a blank in the plane' of its fiat or extended position, a pair of feed rolls in advance of said tapes, into the bight of which the blank is delivered by said tapes, said rolls adapted to continue the forward movement of the blank, anda plurality of members moving in the same direction as said tapes but at a different ratel of speed for engaging an edge of the blank during the period of its forward movement upon said tapes, whereby the blank is squared previous to its passage into the bight of said rolls.

4. In a machine of the class described, the combination, with feed rolls and belts adapted to feed blanks to said rolls, some of said belts operating at a higherv speed than the other belts, means mounted on the slower moving belts and against which the blanks are held by the faster moving'belts, means for creasing, pasting and folding the side flaps of a blank, and means for moving the blank in a direction at right angles substantially to its initial movement to crease, paste and fold the end flaps.

5. In a machine of the class described, the combination, with feed rolls, of belts adapted to feed blanks tosaid rolls, some of,said belts operating at a higher speed than the other belts, lugs carried by the slower moving belts against which lugs the blanks are held by the-faster moving belts, means for folding the side iaps of the blank, a stop provided in the path of said blank, means for moving the blank laterally with respect to its initial movement, means for holding the Ablank against said stop during a portion of ysuch lateral movement, and means flor creasing, pasting =and folding the end aps. 6. In a machine of the class described, the combination, with means for feeding the blank and means for creasing, pasting and folding the side flaps thereof, of a table whereon the partially folded blanks are delivered, a roller mounted in said` table, feed belts operating in a direction 'at right anlgles substantially to the direction of fnovement'of said roller andsaid feeding means',

and creasing, pasting and folding means for the end iiaps of said blank, substantially as described.

7. lIn a machine of the class described, the i combination, with the initial feeding means and'means for creasing, pasting and folding the sidepflaps of an envelop blank, of a secondary feeding means operating at right anf gles substantially to said initial feeding means, a stop provided in the path of the blank fed by said initial feeding means, means for holding the blank in. contact with said stop, and creasing, pasting ;and folding means for" the end flaps-of said' blank, ar-

ranged to receive it from said 'secondary feeding means..

8. The combination, with an initial blank feeding means, of' a secondary feeding means operating in a horizontal plane at an angle to said initial feeding means and, arranged feeding means operating at an angle to said initial feeding means, an adjustable stop provided in the path of the blank delivered by said initial feeding means, means for holding the blank in contact with said stop, and creasing, pasting and folding means whereto the blank is delivered by said secondary feeding means.

10. In a machine of the class described,

the combination, with an initial blank feed` ing means, of a secondary feeding means operating at an angle to said rst named means, a stop provided in the path of the blank fed by said initial feeding means, and a driven roller contacting with the blank to hold it against said stop during the first .part of its movement on said secondary feeding means.

11. The combination, with an initial blank feeding means, of a secondary feeding means operating at an angle' to said initial feeding means and arranged to receive .Ublanks therefrom, a stop provided in the path of the blank carried by said initial feeding means, means holding said blank against said stop while permitting it to be moved at an angle to its original line of travel by said secondary feeding means,and folding means arranged to receive the blanks from said .secondary means.

12. In an envelop machine, the -combinai tion, with an initial blank feeding means,

and means for creasing, pasting and folding the side flaps thereof, of a secondary feeding meansl operating at an angle to said initial feeding means, a stop provided in the path of the blank delivered `by'said initial feeding means, means for holding said blank against said stop while permitting it to be moved at anangle to its original line of travel by said secondary feeding means, and creasing, pasting and folding devices wliereto the blank is delivered by said secondary feeding means.

131 The combination, with an initial blank feeding means, of a secondary blank feeding means operating at an' angle to said initial feeding means, feeding means including belts having means for engaging a blank and moving it sidewise, means for centering the blank in respect to said secondary feeding means, and folding means arranged to\receive the blank from said secondary means.

14. ln an envelop. machine, an initial blank feeding means and means for folding the side flaps of an envelop blank, of a secondary feeding means operating at an feeding means. S5 l angle to said initial feeding means and including feedl belts having means to engage an envelop blank delivered thereon by said initial feeding means, means lfor centering the blank on said belts, and pasting and folding means for the end iiaps of the blank arranged t0 receive it from said secondary 15. `The combination, with an initial blank feeding means, of a secondary feeding means operating at an angle to said initial feeding means, and arranged to receive blanks therefrom, a stop provided in the path of the blank feeding means, blank against it to be moved feeding means, to receive the means. v

16. The combination, with an initial blank feeding means, ofl a secondary feeding means operating at an angle to said initial' eeding means and arranged to receive the blanks therefrom, a. stop Vprovided in the path of the blank carried by said initial feeding means, means for lengaging the blank to hold it in contact with said stop, and folding means arranged to receive the blank'from said secondary means.

17. The combination,'with an initial blank feeding means, and means for folding the side flaps of the blank, of a secondary feeding'means operating transversely with respect to said initial feeding means and having means to engage the blank to move it sidewise, a stop in the path of the blank, and means contacting with the blank and means for holding said said stop while permitting sidewise by said secondary and folding means arranged blank from said secondary feeding means and means said secondary blank carried by said initial.

tering the blank in respect to said secondary feeding means.

19. The combination, with an initial blank for folding the side flaps of the blank, of a secondary feeding meansOperating transversely with respect to said initial feeding means and including belts having means adapted to engage the edge of the blank and move it sidewise, a stop to arrest lengthwise movement of the blank, and means for holding the 'blank in engagement with said stop while the blank is being moved sidewise.

20. The combination, with an initial blank feeding means and means for folding the ing -means operating transversely with respect to said initial feeding means and including belts and lugs thereon adapted to engage the blank and move it sidewise, a stop in the path of the blank, a friction roller arranged to hold the blank in engagement with said stop while it is moved sidewise by said belts and lugs, and folding means for the end aps to which the blank is delivered by said secondary feeding means.

side flaps of the blank, of a secondary feed- 21. The combination, Wah an initial. blank feeding means, of a secondary feeding means operating at an angle to said initial feeding means and comprising an endless carrier'arranged to receive the blankfrom said mitial feeding means, means for projecting the blank over and upon said carrier, a sto for limiting` the movement of the blank transversely of said carrier, means for holding the blank against said stop while it is being moved sidewise by said carrier, and folding means arranged to receive theblank from said carrier.

, 22. The combination, with an initial blank feeding means, of'a table, feed belts operating on said table transversely wlth respect to said feeding means, means for centering the blank on said belts, and a folding means arranged to receive blanks from said belts. U 23. 1n a machine of the class described, means for forwardin a blank in the plane of its iat or extender? position, independent forwarding means to which the blank is delivered by said first mentioned forwarding means for continuing the forward movement of the blank, and a plurality of members moving, inthe same direction as said rst Y mentioned forwarding means, butat a dfiferent. rate of speed, for engaging an edge of the blankfduring itsforward movement bysai'd first-mentioned forwarding means, whereby 4the blank is squared `previous to its delivery to said second -metioned forwarding means.

Inwitness whereof, have hereunto set my hand this 17th day of July 1908.

EDWIN Gr. STAUDE.

Witnesses RICHARD PAUL' J A. BmeToN. 

